"Excuse me." He said, as I bumped into him and didn't immediately say that I was sorry, which I normally would.
In fact, I just kept on walking and didn't look back,
"Wow, it's one thing to bump into someone, because we can all do that and it's no big deal when we immediately apologize, but it's quite another to just keep on walking like nothing happened." he said, becoming indignant, not that I cared then as I continued walking towards the employee's only area of the building, shaking my head as if I was thinking, what, are you still griping? Give it a rest buddy as a man with a stupid gripe was the last thing I needed today.